Evolutionary theory

Barrett et al. (2002) state that natural selection is “based on just three premises and their
logical consequences”. We have also discussed these in terms of cultural evolution. Using a
specific example of natural selection, please describe in your own words each of these 3
principles of natural selection
a. Principle of Variation
b. Principle of Inheritance
c. Principle of Adaptation
2. Evolutionary theory proposes that we are more likely to cooperate with our kin and it is more
likely to be beneficial. However, in modern societies less and less of our lives are spent in
contact with relatives, so is this evolutionary prediction still supported? From your readings
provide research evidence for or against the proposition that kin are more likely to help each
other and any benefits or disadvantages (e.g., survival and reproduction) associated with this
3. How sexual selection could operate via two different processes. Please state and describe what
the 2 forms or types of sexual selection were called and for each type of sexual selection
provide 2 examples of a feature that has evolved via this process
a.
b.
4. Discussion of sexual selection predominately focus on sexually selected traits in males. Ever
since Darwin, little focus has been on sexually selected traits in females. Describe 4 sexually
selected traits in females. At least 2 must be found in humans
5. In the reading on gossip in the Tsimane of Bolivia, negative gossip was associated with lower
attractiveness ratings of women. However, women who were rated as being promiscuous were
not rated as being less attractive. In the discussion of this article Rucas et al. (2006) gave
several reasons why the association between promiscuity and reduced attractiveness was not
found. Please critically evaluate 2 possible reasons why promiscuity was not associated with
lower attractiveness ratings
a.
b.